Improvement in steam-geneeatoes



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Letters .Patent No. 80,144, Adated July 21, 1868.

IMPROVEMENT IN STEAM-GENERATORS.

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TO WI-IOM IT MAY CONCERN: 1

Be it known that I, HENRY S. COLE, OfPaWtucket, in the county of Providence, State of Rhode Island, have invented a new and improved Method, Device, and Arrangement for the Prevention of Foam in Steam- Bo'ilers. A V I Said improvement is specially adapted to the boilers of steam fire-engines operating in seaboard towns and cities, inasmuch as frequent necessity exists that saltwater be used for steam purposes. It is a well-known fact that saline or other similarly-impregnated waters are, while being usedin generating steam, liable to foam to such anextent as to greatly lessen the ei'licieney of the apparatus. It is to overcome this foaming that myV improvement or invention is intended, and which in practice it fully accomplishes.

My invention consistsin forcing water'upon the water-surface within the boiler at proper intervals, in quantities sullicient to at once checkithe foam, at the same time insullcient to materially retard the generation of steam. v

To enable others skilled inl the art to construct, use, and operate my nvention,-I present the followingV full, clear, and exact description thereof, with the assistance of the accompanying drawings and figures, with letters of reference thereon.`

Figure 1 represents an elevation view of' a eommon upright steam-boiler.

. Figure 2 represents'a sectional view of a. steam-boiler containing my improvement.

'A represents the Ere-box.

B B B B, Hue-tubes.

C represents the smoke-stack.

Drepresents the water-line.

E represents the steam-space.

F represents a round or at'tened pipe, forming a circle within the boiler atorjust above the water-line D. As will be seen in the drawing, this pipe is freely perforated with small holes.

F F represent a pipe leading from an injection-pump, (not shown.)

Figure 3 represents the round or flattened pipe F, before shown in section.

I do not claim the arrangement of re-box ilues, conical chamber, Snc., as shown in my drawings, the same haring been in public use for several years.

The operation is as follows: While lusing w'nthin the boilensaline or other similar waters liable to foamor rise while generating steam, small jets 'of water are thrown from the injection-pump through pipe F F, and the apertures in F upon the surfaceof the water at proper intervals, lthus keeping down thefoam.

The apertures in the pipe F may be round, oblong, continuous, or of any desired form;

I claim as my invention, and desire to secure by Letters Patent- 3 The perforated pipe F, at or near the Water-line, substantially as described, for thelpurposes speeied.

l HENRY S. COLE.

Witnesses:

ROYAL LEE, GEo. A. CARPENTER. 

